Duplex tool-holder for planers, &amp;c.



Patented Sept. '9, H902. J. WICKSTEED. DUPLEX TOOL HOLDER FOR PLANERS, 81.0. (Application filed Mar. 8, 1902.) (NOMOUBIJ 7 29 mkwm dam :4 4

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UNITED STATES ATENT FFI'CE.

JOSEPH HARTLEY WIOKSTEED, OF LEEDS, ENGLAND.

DUPLEX TOOL-HOLDER FOR PLANERS, 81.0.

SPECIFICATION forming part of Letters Patent No. 708,947, dated September 9, 1902.

Application filed March 3, 1902. erial No. 96,581. (No model.)

To (ZZZ whont it may concern:

Be it known that I JOSEPH HARTLEY WICK- STEED, engineer, a subject of His Britannic Majesty, residing at \Veetwood, in the city of Leeds, England, haveinvented certain new and useful improvements in tool-holders for planing, shaping, slotting, and like machines with two tools for cutting on .both forward and return motions, of which the following is a specification.

This invention relates to certain new and useful improvements in tool-holders; and the object thereof is to minimize the distance between the cutting edges of the two tools, and so reduce the idle stroke, to provide in a toolholder a longer bearing for the tool, to pro:

vide a locking invariable abutment during the cutting operation for the socket carrying the tool, to provide a new and novel means for securing the tool within the socket, and to maintain the tool or tools more rigidly against side or vertical stress.

The invention further aims to construct a tool-holder which is simple in its construction, strong, durable, efficient in its opera-' tion, and comparatively inexpensive to set up; and to this end it consists of the novel combination and arrangement of parts hereinafter more specifically described,illustrated in the accompanying drawings, and particularly pointed out in the claims hereunto appended.

In describing the invention in detail reference is had to the accompanying drawings, forming part of this specification, wherein like reference-letters indicate corresponding parts throughout the several views, and in which Figure 1 is a side elevation of the toolholder. Fig. 2 is a front elevation thereof. Fig. 3 is a plan. Fig. 4 is a sectional detail view of the tool-socket and its trunnions and the manner of securing the same in position, as wellas securing the tool within the socket; and Fig. 5 is a side elevation of the toolholder the reverse of Fig. 1.

Referring to the drawings, the tool-holder is shown therein consisting of a plate A, preferably circular, having a bracket A formed integral with one face thereof and projecting therefrom at right angles. On the other face of plate A is formed a central boss A on which the tool-holder may be rotated on the side or head of a planing or other machine and by which it may be partially supported, especially during the operation of setting or adjusting. The plate A is formed with a number of bolt-holes a and with an additional bolt-hole a, passing longitudinally through the bracket A and also through the plate A for the purpose of securing the holder in position. Integral with one side of the bracket A" are three projections A A A provided with recesses and which form abutinents for the tool-holding sleeves or sockets hereinafter referred to.

The reference-letter B denotes the tool-hold ing sleeves or sockets, substantially square or rectangular in contour, and these sockets are adapted to be arranged between the projections A A and A The projections A A are arranged at each side of the sleeves or sockets B at the top thereof, and the projection A is arranged to extend between the sockets B. These latter are provided at their outer ends on their front sides with lugs b and at their lower ends'and inner sides with lugs 19, which are adapted to engage in the recesses formed in the projections A. A A The sleeves or sockets B are formed integral or suitably attached to the hollow trunnions c c, the latter being mounted in suitable openings formed in the bracket A and in which they may partially rotate. The trunnions c are each secured in position by means of a nut c and a locking-nut c screwing into the outer end of the said nut c and abutting on the end of the trunnions.

The reference-letter D denotes clampingrings which surround the 'nuts 0 and are tightly secured thereon by means of the bolts D. The clamping-rings are each provided with a stud (Z on one side thereof.

The reference-letter E denotes rods for connecting the studs 01 to the helical springs F, the latter being attached, by means of the rods G and nuts H, to the lug A, formed integral with the bracket A. The function of the springs F is to return the trunnions carrying the sleeves or sockets to their normal positions.

The reference-letter J denotes the cuttingtools, which are secured within the sleeves or sockets B by means of the screws h, extending through one side of the sleeves or sockets B, the screws is, extending through the front side of the sleeves orsockets, and the screws j, which extend through the trunnions and into the sockets against the tools J. The screws j allow the tools to be secured within the socket without engaging the inner face of the rear wall of the socket, and they also permit of the tool being secured centrally of the socket in case the socket is larger the the shank of the tool.

The bracket A maybe cast in such a manher that the sockets may be attached to the opposite side of the bracket to that as shown, and-the bracket may be cast to extend from either side of the face of the plate A, and the bracket A may be placed at any convenient distance right or left from the central line of the plate A.

By the employment of the elongated sockets or sleeves B, in which the tools are secured, and the connecting of the sockets or sleeves to the cylindrical trunnions, as shown, the trunnions can partially rotate, and thereby allow a tool to tilt on its return or non-cutting movement. By providing recesses in the projections A A A in which engage the lugs carried by the sleeves or sockets B during the cutting operation, the respective socket takes its abutment against the solid tool-stock and is prevented by the lugs which engage in the recesses from any sidewise or upward movement. This form of holder is especially useful for side cutting. It will also be obvious that the sizes of the socketholes may be such as to allow each tool to be slightly adjusted sidewise relatively to each other by means of the set-screws.

It is thought the many advantages of my improved tool-holder will be readily understood from the foregoing description, taken in connection with the accompanying drawings, and it will also be noted that minor changes may be made in the details of construction without departing from the general spirit of my invention. I

What I claimas my invention, and desire to secure by Letters Patent, is-

1. In a tool-holder, a plate, a bracket integral therewith, a series of abutments integral with the bracket and provided with recesses, trunnions mounted in the said bracket, springs connecting the trunnions to the bracket, sleeves connected with the trunnions and provided with lugs adapted to ongage in the said recesses, and tools suitably secured within the sleeves.

2. In a tool-holder, a pair of partially-rotatable trunnions, sleeves carried thereby and provided with lugs, tools suitably secured in the sleeves, a series of abutments provided with recesses and arranged at the sides of the sleeves, said recesses adapted to receive the said lugs during the operation of the tools, and means for supporting the trunnions and abutments.

3. In a tool-holder, a pair of partially-rotatable trunnions, sleeves suitably connected with the trunnions, tools suitably mounted in the sleeves, an abutment interposed between the sleeves, an abutment at each side of the sleeves, means integral with the sleeves and engaging in the abutments to prevent sidewise or upward movement during the cutting operation of the tools and means for supporting the trunnions and abutments.

4. In a tool-holder, a pair of partially-rotatable trunnions, sleeves carried thereby and provided with lugs, abutments suitably arranged in relation to the said sleeves and provided with recesses adapted to receive the lugs carried by the sleeves, means for suitably supporting the abutments and trunnions, and springs connected with said trunnions and With said supporting means.

5. In a tool-holder, a pair of trunnions, toolcarrying sleeves connected thereto, an abutment interposed between the sleeves, an abutment arranged at one side of each of the said sleeves, means carried by the sleeves and adapted to engage in the abutments to prevent movement of the sleeves during the operation of the tools and means for supporting said abutments and trunnions.

6. In a tool-holder, a plate, a bracket integral therewith, apair of trunnions extending through the said bracket, a pair of springs connected at one end to the trunnions and at the other end to the said bracket, tool-receiving sleeves connected with the trunnions, an abutment integral with said bracket and interposed between said sleeves, and a pair of abutments integral with said bracket and one of which is adapted to be arranged at the outer side of each of the said sleeves.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit-- nesses.

JOSEPH HARTLEY WICKSTEED.

Witnesses:

THos. DALTON, A. L. P. LONDON. 

